1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/encoding/FallbackEncoding.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,94 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#ifndef mozilla_dom_FallbackEncoding_h_
1.9 +#define mozilla_dom_FallbackEncoding_h_
1.10 +
1.11 +#include "nsString.h"
1.12 +
1.13 +namespace mozilla {
1.14 +namespace dom {
1.15 +
1.16 +class FallbackEncoding
1.17 +{
1.18 +public:
1.19 +
1.20 + /**
1.21 + * Whether FromTopLevelDomain() should be used.
1.22 + */
1.23 + static bool sGuessFallbackFromTopLevelDomain;
1.24 +
1.25 + /**
1.26 + * Gets the locale-dependent fallback encoding for legacy HTML and plain
1.27 + * text content.
1.28 + *
1.29 + * @param aFallback the outparam for the fallback encoding
1.30 + */
1.31 + static void FromLocale(nsACString& aFallback);
1.32 +
1.33 + /**
1.34 + * Checks if it is appropriate to call FromTopLevelDomain() for a given TLD.
1.35 + *
1.36 + * @param aTLD the top-level domain (in Punycode)
1.37 + * @return true if OK to call FromTopLevelDomain()
1.38 + */
1.39 + static bool IsParticipatingTopLevelDomain(const nsACString& aTLD);
1.40 +
1.41 + /**
1.42 + * Gets a top-level domain-depedendent fallback encoding for legacy HTML
1.43 + * and plain text content
1.44 + *
1.45 + * @param aTLD the top-level domain (in Punycode)
1.46 + * @param aFallback the outparam for the fallback encoding
1.47 + */
1.48 + static void FromTopLevelDomain(const nsACString& aTLD, nsACString& aFallback);
1.49 +
1.50 + // public API ends here!
1.51 +
1.52 + /**
1.53 + * Allocate sInstance used by FromLocale().
1.54 + * To be called from nsLayoutStatics only.
1.55 + */
1.56 + static void Initialize();
1.57 +
1.58 + /**
1.59 + * Delete sInstance used by FromLocale().
1.60 + * To be called from nsLayoutStatics only.
1.61 + */
1.62 + static void Shutdown();
1.63 +
1.64 +private:
1.65 +
1.66 + /**
1.67 + * The fallback cache.
1.68 + */
1.69 + static FallbackEncoding* sInstance;
1.70 +
1.71 + FallbackEncoding();
1.72 + ~FallbackEncoding();
1.73 +
1.74 + /**
1.75 + * Invalidates the cache.
1.76 + */
1.77 + void Invalidate()
1.78 + {
1.79 + mFallback.Truncate();
1.80 + }
1.81 +
1.82 + static void PrefChanged(const char*, void*);
1.83 +
1.84 + /**
1.85 + * Gets the fallback encoding label.
1.86 + * @param aFallback the fallback encoding
1.87 + */
1.88 + void Get(nsACString& aFallback);
1.89 +
1.90 + nsCString mFallback;
1.91 +};
1.92 +
1.93 +} // dom
1.94 +} // mozilla
1.95 +
1.96 +#endif // mozilla_dom_FallbackEncoding_h_
1.97 +
